ln the present study, an effort was directed to clarify the effect of the physical rhythm on the pulmonary function.
Subjects were twenty-one female students who were attending at the department of dancing and twenty-nine nursing students, and a comparison was made between the two groups.
The followings were mainly observed by spirometry for the study; tidal volume, vital capaity, maximal voluntary ventilation(MVV), forced expiratory volume for 1 second (FEV_(1)), percent FEV_(1) to forced vital capacity (FEV_(1)%), forced expiratory flow for initial 1 liter (FEF_(0.2_1.2L)), and forced mid-expiratory flow(FEF_(23-75)%)
The results obtained, were summarized as follows:
1. The tidal volume and vital capacity showed no conspicuous difference between the two groups. The MVV in dancing students was conspicuously increased to 122.8±6.5L/min comparing with 97.7±4.7L/min in nursing students.
2. FEV_(1) was 3.097±0.104L in dancing students and 2.453±0.089L in nursing students; FEV_(1)% was 87.80±2.37% in dancing students and 76.10±2.12% in nursing students, both snowing conspicuous increase in dancing students.
3. FEF_(0*2-1*2L) was 253.9±14.7L/minin dancing students and 196.5±12.3L/min in nursing students; FEF_(25_75)% was 3.143±0.211L/sec in dancing students and 2.218±0.181L/sec in nursing students, both showing conspicuous increase in dancing students.
4. On these results, the lung volumes showed no conspicuous difference between the two groups, but MVV, FEV_(1), FEV_(1)%, FEF_(0*2-1*2L), and FEF_(25_75)% in dancing students were conspicuously higher than in nursing students. It is therefore concluded that respiratory muscle´s tension and elasticity of the lung were increased, and air-way resistance was diminished, in dancing students.
|